Home / 708,289.29-977,327.46-398,130.69

Finding the Fourth Proportional to 708,289.29, 977,327.46 and 398,130.69

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Solution

The fourth proportional to 708,289.29, 977,327.46 and 398,130.69 is: 549,357.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,289.29 : 977,327.46 = 398,130.69 : x
  2. Step 2: Convert to fraction form
    708,289.29/977,327.46 = 398,130.69/x
  3. Step 3: Cross multiply
    708,289.29x = 977,327.46 × 398,130.69
  4. Step 4: Simplify right side
    708,289.29x = 389,104,056,005.75
  5. Step 5: Solve for x
    x = 389,104,056,005.75/708,289.29
  6. Step 6: Final answer
    x = 549,357.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.